Automatic cut-off for electric currents.



No. 887,918. 8 I PATENTED MAY 19, 1908'. D. G. GANIZARES.

AUTOMATIC OUT-OFF FOR ELECTRIC 'GURRENTS.

I APPLICATION FILED JUNE 86,1905.

DQMINGO SERVER A CANIZARES, F PARIS, FRANCE;-

AUTOMA'I'ZU CUT-QFF FOR ELEQTRIC 'CUERENTS.

To all win m it in-oyrm't-cern:

Be it known. that l, DOMINGO CERVERA CANIZARES, a sub ect of the King of Spam,

residing at Paris, in the Republic of France,

have invented a ci-rrtein-new and useful Automatic Cut-Off for Elect ricCurrents, of which the following is it specification.

The apparatus accordii'ig to this invention is intended to prevent electric current from. exceeding a predetern'iined maximum, that lslto say, as soon as the current reaches or exceeds that nuiximum, the apparatus unto-- ina-ticelly cuts off the current.

The apparatus is vehiell'y intended to he used by subscriberssuppliedwith .'urrent from electric stations and only having a right to a limited amount of light or to a motive power not exceeding a given horse power. it is Intended to he installed at each suhscrlberfs by the company which supplies the current by contract. lt cnn also he used wherever it is desired to limit the intensity of the electric current.

A construction of the automatic cut-oll' according to this inwuition illustrated, by wziy'of example, in the nmcom ninyingdrewing, in which:

Figure 1 is a front view of the apparatus during. the transmission of current, that is to say, in its ordinary working position; Fig. 2

. a. section on the line A--A of Fig. i Fig. 3 snows the n-opnrstus ntthe moment when the current is (illi'flll, owing to the supply having exceeded the muxinmm, and F1". 4 shows part of the apparatus in side elevation.

This cut-ell" conu rises n ve'rl' 'nl date or su )port 7) to which is secured n. hjrecnet (J inlated. from tho pinto I h on e-lionite or other platen; ()n the hrnrket is mouiited n coil (L lowing n movnhle core e. To the bracket a switch lever c mounted on n stud or spindle. o is )ivoted. it hil'u'rcnted lmlunrc homo It, proviil ed with n. hninure weight having the shnpe ol" :1. cylim'lricnl sector and :i movnhlonnd adjustableweight g, is mounted on ii spindle q pivoted in the bracket I). The eri )heryof the part is so situated relatively to the spindle 1 that when it current of normnl intensity passes through the coil, and the part is in tl'ie'position.shown in Fig. l, one

of its ends is held by the counter-weiglit g nwuy from the core] 1 While on the. contrary,

the central portion olthu snid purt f has the toni lency of coming nenrer to the core a when Specification of Letters Patent...

Application filed June 26, 1905. Serial No. 267,087.

ratenced ma 19, 1908.

8. strong current passesthrough the electromagnet, as shown in Fig. 3. The forked part i of the switch is insulated from the bracket 5 by an ebonite late '1' and carries a terminal d connected'to tile terminal 'y by a wire f. The whole is inclosed in a casing t which may be sealed.

. The cut-off is inserted into the circuit of an electric installation, in series with the lamps or with the motor to which the current is to he so plied by means of the terminals 9: and 'y. T e current enters through the terminal as (Fig. 1) passes through the poll it, the bracket Z), the switch lever a, switch contact i, the terminal 01, the wire If and passes out through the terminal y. t attracts in its passage the core e which acquires a greater or less ettractivepower according to the intensity of the ciirrent pessing through the -coil (L.

ll the current is to be limited say to on extent sullicient to give 20 candle power, the apparatus is set by means of the two out by adjusting them to a greater or less distnnce from the centerof oscillation of the lever h, until the balance weight armature j of the said lever is no longer attracted by the core of the electro-magnet when current sullh'ient for that candle ower asses through the apparatus It tlns limit e exceeded, that is to say, for instance, if one lump loonumy be thrown intov the circuit, the in lrnctive force of the core 6 of the electroenngnet will increase to such an extent that it will utlruct the urmoturej on the lever II which will then swing leaving its normal position, shown in Fig. 1 and its right arm will suddenly strike the switch lever c by menus oi the pin l and force the said switch lever against the stop m quickly separating its upper end from the fork i wherel'iy the current will he cut oil'. The electro-mngnet heroines ntonre (l0-=l!lt."'li(ilZ0(l and the lever I." returns, under the influence ol' the balanceweight 5 into its original position (Fig. 1), and its left arm raises the switch lover a so that the top of thelntter ngnin engages with the tort: '1', thus allowing the current to pass ngnin.

i The nutonmtic operation of swinging the hnhuu'e lever h and consequently the switch lever 0, will be repeated so long as there is no excess of current. But as soon as this excess disnppeiirs, the parts will immedi- 1. An automatic electric cut-out eompris ing a sup orting plate, a bracket mounted on I and lnsu ated from sald plate, an eletfiromagnet supported by said lever pivoted in saidbraeket, an adjustable bracket, a belanee counterweight, a segment-shaped armature on said balance lever and a switch lever operated by said balance lever, substantially as set forth. I

2. In an automatie eleetrie eut-out of the kind described, the eombination of a swinging armature, a pivoted plate, segmentshaped armature on one side of said plate, an ad ustable balanee weight on the other side of said plate, and fork-shaped switeh-eontaet operating arms intermediate the armatnre' position l arnbfbalanee weight, substantially as set forth.

In an automatic (cut-out of the kind described a swinging armature and switch eontact operating device consisting of a pivoted plate, provided with a segment-shaped armature on one side and an adjustable balance weight. on the other side and fork-shaped switeh-eontaet operating arms intermediate the armature and balanee weight, a switeh r; eontaet plate, and a pin mounted thereon and adapted to engage the fork-shaped arms snbstantialtv as set forth.

ln testimony whereof I have signed my name to this speeitieation in the ptesenee ol' 1', two subscribing witnesses.

lNLlllXlldt (Illlll'lillll GAS'IZMHIS. Witnesses:

llAxsox (one, (lt-zonm-zs ltoxnnt'tL. 

